The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Coulomb's Law and Electric Field Package.
Electric Field: What is Wrong? package shows incorrect versions of similar simulations. Students need to identify the error.
made some changes:
redesign the control panel
added finer control of position x and y
added Q slider that remembers the state of the charges
A database of Easy Java Simulations categorized by subject. It is part of the OSP (Open Source Physics) Project.
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